Install insulation with the proper R-value, a factor that describes the material's ability to resist heat.
The level of R-value necessary for you home depends a great deal upon the climate in which you live.
There are also websites, such as Attic Protector that let you calculate the R-value for your area.
You'll also need to choose the correct R-value insulation based upon your geographical location.
Insulation with a higher R-value will offer you greater protection against heat loss.
The R-value is the measure of the insulation's ability to stop the flow of heat.
Pay attention to R-values: All insulation is rated with an R-Value.
Doing so will change the R-value of the insulation.